All of the following traits are characteristics found in the stems of eudicots except ________
a. centers of stems composed of pith
b. vascular bundles arranged in a cylinder around the outside of the stem
c. vascular bundles distributed throughout ground tissue
d. outer layer of epidermis
c
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Antibody molecules ____
a. are secreted by B cells and T cells b. stay attached to the B cell membrane as B cell receptors c. inactivate complement proteins d. prevent phagocytosis e. can each bind to many different antigens
DNA methylation is a form of transcriptional regulation by eukaryotes
____________________ Indicate whether the statement is true or false.
Once used by an organism, carbon- and nitrogen-based nutrients are unavailable for other organisms
Indicate whether the statement is true or false
The largest molecule of the following is
A. glucose. B. a polysaccharide. C. a disaccharide. D. sucrose. E. a monosaccharide.